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Register a new userدراسة منظومة من الآلات ذات المفاصل الدورانية فقط
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Aِl-Baath University رسالة ماجستير
Publication date
2019
fields
Mathematics
and research's language is
العربية
Created by
Shamra Editor
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إن الآلات ذات المفاصل الدورانية فقط تمتلك أهمية خاصة في مجال الأجهزة الدقيقة وصولاً إلى تطبيقات كبيرة قد تكون إحدى الآلتين هي الآلة الكلية ( الروافع والحفارات ) فأي عمل نحو تسهيل حركة هاتين الآلتين ضمن منظومة معينة هو خطوة نحو الأمام باتجاه عملها الأمثل
Machines with rotary joints only have a special importance in the field of precision devices to reach great applications. One of the two machines may be the total machine (cranes and excavators). Any work towards facilitating the movement of these two machines within a certain system is a step forward towards its optimal work
Artificial intelligence review:
Research summary
تتناول هذه الرسالة دراسة منظومة من الآلات ذات المفاصل الدورانية فقط، والتي تُعد ذات أهمية كبيرة في التطبيقات الصناعية والأجهزة الدقيقة. تهدف الدراسة إلى تطوير منظومة رياضية قادرة على تحديد الإزاحات النسبية للأجسام بعد استبدال المفاصل الدورانية بمفاصل مرنة. تشمل الرسالة عدة فصول تتناول مقدمة عن أهمية الآلات الصناعية، نظرية البيان، أنواع الآلات وتطبيقاتها العملية، مخططات الآلات الجديدة، وتحليل الإزاحات النسبية. كما تتناول الرسالة إيجاد عدد الأجسام والمفاصل والحلقات الأساسية لأية منظومة من الآلات ذات المفاصل الدورانية فقط. تُظهر النتائج أن استخدام المفاصل المرنة يقلل من تكلفة الإنتاج والوزن ويزيد من دقة الآلات، مما يجعلها أكثر فعالية في التطبيقات الصناعية.
Critical review
دراسة نقدية: تعتبر هذه الرسالة ذات أهمية كبيرة في مجال الميكانيكا التطبيقية، حيث تقدم حلولاً مبتكرة لتقليل تكلفة الإنتاج وزيادة دقة الآلات. ومع ذلك، يمكن تحسين الرسالة من خلال تقديم أمثلة تطبيقية أكثر وضوحاً وتفصيلاً حول كيفية استخدام المفاصل المرنة في الآلات الصناعية. كما يمكن تعزيز الدراسة بإجراء تجارب عملية لدراسة تأثير المفاصل المرنة على أداء الآلات في بيئات عمل مختلفة. بالإضافة إلى ذلك، يمكن توسيع نطاق البحث ليشمل أنواعاً أخرى من المفاصل والآلات لتحليل شامل ومتكامل.
Questions related to the research
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ما هي الفوائد الرئيسية لاستخدام المفاصل المرنة في الآلات الصناعية؟
تتمثل الفوائد الرئيسية في تقليل تكلفة الإنتاج، خفة الوزن، عدم الحاجة إلى صيانة، وزيادة دقة الآلات.
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ما هي الحالات الثلاث التي تم دراستها لوصل الآلتين العشاريتين؟
تم دراسة ثلاث حالات: الوصلة الثابتة من الطرفين، الوصلة ذات مفصل واحد، والوصلة ذات مفصلين.
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ما هي الأهداف الرئيسية لهذه الرسالة؟
الهدف الرئيسي هو بناء منظومة رياضية قادرة على تحديد الإزاحات النسبية للأجسام بعد استبدال المفاصل الدورانية بمفاصل مرنة.
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كيف تسهم المفاصل المرنة في تحسين أداء الآلات؟
تسهم المفاصل المرنة في تحسين أداء الآلات من خلال تقليل الاحتكاك، زيادة الدقة، تقليل الوزن، وعدم الحاجة إلى صيانة دورية.
References used
وليد حمدان .دراسة حول آلة ستيفنسون المضاعفة .جامعة البعث
rate research
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Using a corpus of compiled codes from U.S. states containing labeled tax law sections, we train text classifiers to automatically tag tax-law documents and, further, to identify the associated revenue source (e.g. income, property, or sales). After e
valuating classifier performance in held-out test data, we apply them to an historical corpus of U.S. state legislation to extract the flow of relevant laws over the years 1910 through 2010. We document that the classifiers are effective in the historical corpus, for example by automatically detecting establishments of state personal income taxes. The trained models with replication code are published at https://github.com/luyang521/tax-classification.
Studied the distribution coefficient of elemental copper and lead contaminants in the aqueous phase using a Bi-phase system: solid phase (the sands of Palmyra) and liquid phase (water containing the former two elements), where they were sampling sand
samples from different regions in Palmyra to investigate for possible use as an adsorbent for elemental copper the lead from contaminated water, and after adjustment for certain transactions from time mixing phases, granular size, concentration of hydrogen ions, the concentration of the contaminated ingredient, the concentration of rival element (calcium) in addition to the ratio v / m in order to get the best rate for removal of these elements. The removal rate of copper componentamounted to 99.9% using four sites samples of sand a Palmyra, (al qareaten - the third leg to pump crude oil T3 - Alhl field - the valley between Mount aldahek and Sokhna) For lead removal ratio stood at 76.35% for the qareaten and 87.75% of the station the third to pump crude oil and 95 0.0% of the field Alhl and 96.25% of the valley between Mount aldahek and Sukhna. The application of the conditions that we have obtained in the laboratory to industrial water samples from the water income for the unity of treatment in Banias refinery and Water Company Drinaj of the Syrian Company for Oil Transport and the ratio of the removal of lead in the four samples ranging from ( 97.79 - 100)% for water Banias Refinery Company ranged between (83.89 - 88.08)% for water Syrian Company for Oil Transport, while the percentage of removal of the copper in the four samples ranging from (96.52 - 99.37)% for water Banias refinery Company and ranged ratio remove copper from the Syrian Company for Oil Transport water between (82.66 - 96.28)% in four samples.
Joints study in Skhaba region shows the existence two joint directions, principal dominant
NW-SE Joints from extension origin upper Cretaceous age, unrelated and older than faults
in studied area statistically, the presence of Calcareous filling in
the joints that is supported
the extension origin in the first phase. Secondary NE-SW joints from Miocen-Pliocen in
age, and from extension origin ,related to the formation of faults, most of them contain thin
iron crust in secondary phase.
The main goal of maintaining and repairing equipment and machines during the
investment stages is to reduce the amount of money spent in order to maintain the validity
of their operation and the quality of their reliability under the different give
n investing
conditions (type of manufacturing materials, methods used, temperatures, nature of
investment, …. etc).
This goal can be achieved if we are able to control changes in the technical
conditions of equipment and the frictional parts during the investment stages, besides
knowing the physical laws/rules that govern the technical changes properly. Therefore, we
carried out a study on the theoretical plans of physical wear of brakes and the frictional
parts in means of transportation. This is done starting from wet (oily) wear plans of the
frictional parts in machines. Then, based on these plans we studied physical laws/rules
determining the intensity of dry wear of brakes, along with its speed and acceleration
during the investment and the unreliable, uneconomical (unsafe) operation stages, taking
into consideration the methods used in periodical technical maintenance, ways of driving,
and the average number of times brakes are used…etc .
Based on these formulas obtained, we can estimate/predict the start of ineffectiveness
of brakes and friction linings, in addition to the inception time of risky (unreliable)
operation stage. Consequently, this stage gives us indications for replacement or treating
with the traditional (known) mechanical and chemical ways, in light of the soaring prices
of materials in the Syrian Arab Republic.
As the huge development in all life fields especially the commercial exchange with
its variable types, more specifically the maritime, due to the continuous increase in the size
of the accompanying big cargos. Ports significance emerges as the most
important
establishments to support the national economy. So, it has to be highlighted by working to
develop and improve its standard specifications, particularly quays that are used for
anchoring ships. The variety of quays link by geodesic-geotechnical features, material
quality used and available for constructing, quality and size of ships that are anchored at
these ports. The quay walls are designed to be stable and fixed to actualize the enquired
safety conditions so it can offer its service employment without neglecting the economic
factor during design operation. In this research, we will study variable types of quays
constructed in variables countries of the world, the structural study had been done for one
of these types according to the Syrian Arab Republic conditions with its local geodesicgeotechnical
features, permanent and temporary effected loads, also stability and fixity of
the studying type (maritime scurfy quay type with big diameters) according to local
conditions and codes, proceeding the necessary comparative for structural study results of
considered type for determining the importance of this type.
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